Congresses -- Politics and government -- 4 Congresses 3 Social conditions -- 3 Perestroika -- 2 Communism -- 1 Congresses. -- 1 more ... Defenses -- 1 Economic policy -- 1 Elite (Social Sciences) -- 1 Foreign relations -- 1 History -- 1 Pluralism (Social sciences) -- 1 Quality of life -- 1 Relations -- 1 less ...